Which is essential for bringing variation and evolution? (1) Mutation (2) Reproduction (3) Mitosis (4) Genetic drift What Is Mutation? A mutation is a change in the DNA sequence of an […]
Tag: CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
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CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Why Population Is the Smallest Unit That Can Evolve: Unraveling the Basics of Evolution
Smallest unit which can evolve is- (1) Individual (2) Species (3) population (4) Gene What Is a Population? A population is a group of individuals of the same species living in […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
The Primary Cause of Variation Among Individuals in a Population: The Role of Mutation
The primary cause of variation among different individual in population is presence of (1) Recombination (2) Mutation (3) Multiple alleles (4) Hybridization What is Genetic Variation? Genetic variation refers […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Debunking Myths: What Antibiotic Resistance Teaches Us About Natural Selection
Examples of antibiotic resistance highlight important features of natural selection. Which of the following statements is NOT true? (1) Evolution by natural selection is progressive, it makes individuals ‘better’. (2) […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Understanding Positive Frequency-Dependent Selection: When Fitness Favors the Common
Which one of the following statements is TRUE for positive-frequency dependent selection? (1) Fitness of a genotype increases as it becomes less common. (2) Fitness of a genotype increases as […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Genetic Drift: The Reason Behind Reduced Heterozygosity and Increased Homozygosity in Randomly Mating Populations
Reduction in the frequency of heterozygous genotype with a concomitant increase in the frequency of homozygous genotype, in context of random mating is due to (1) Genetic drift (2) Intense […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How Inbreeding and Finite Population Size Reduce Genetic Variation
How is genetic variation in a population related to inbreeding and finite population size? (1) Both finite population size and inbreeding lead to decrease in genetic variation. (2) Only inbreeding […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Why Sexual Reproduction Prevails: Genetic Diversity, Mutation Purging, and the Red Queen Hypothesis
In spite of its two-fold cost, sexual reproduction is the most dominant mode of reproduction among the living organisms. Which of the following reasons might account for this? (A) Sexual […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Adaptive Radiation in Galapagos Finches: How Mutation and Selection Shaped Beak Diversity
The Galapagos finches were an important clue to Darwin’s thinking about the origin of species. These finches are believed to have descended from a single ancestral species that colonized the […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How Natural Selection Favors Moth Color Morphs in Different Forest Environments
A moth species occurs as two distinct morphs based on wing colour — pale and dark. In the forest there are trees with dark coloured trunks as well as those […]
